EN 50377-2-2:2009

SLOVENSKI STANDARD
01-julij-2009
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Product specification for connectors, adaptors and patchcords to be used in single mode
optical fibre communication systems - Part 2-2: FC/APC 8 terminated on IEC 60793-2-50
category B1.1 and B1.3 single mode fibre, with full zirconia ferrule, category C
eux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de
communication par fibres optiques - Spécifications de produit -- Partie 2-2: Type FC/APC
8 connectés sur fibre unimodale de catégorie B1.1 et B1.3 de la CEI 60793-2-50, avec
férule tout zircone, catégorie C
Spécification de produit pour connecteurs, raccords et cordons de brassage à utiliser
dans les systèmes de communication par fibres optiques unimodales -- Partie 2-2: Type
FC/APC 8° connectés sur fibre unimodale de catégorie B1.1 et B1.3 de la CEI 60793-2-
50, avec férule tout zircone, catégorie C
Ta slovenski standard je istoveten z: EN 50377-2-2:2009
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50377-2-2
NORME EUROPÉENNE
May 2009
EUROPÄISCHE NORM
ICS 33.180.20
English version
Connector sets and interconnect components
to be used in optical fibre communication systems -
Product specifications -
Part 2-2: FC/APC 8 terminated on IEC 60793-2-50 category B1.1 and B1.3
singlemode fibre, with full zirconia ferrule, category C

Jeux de connecteurs et composants Steckverbindersätze
d'interconnexion à utiliser und Verbindungsbauelemente
dans les systèmes de communication für Lichtwellenleiter-
par fibres optiques - Datenübertragungssysteme -
Spécifications de produit - Produktnormen -
Partie 2-2: Type FC/APC 8 connectés Teil 2-2: Bauart FC/APC 8
sur fibre unimodale mit Zirkoniumstift zum Anschluss
de catégorie B1.1 et B1.3 an Einmodenfasern
de la CEI 60793-2-50, der Kategorien B1.1 und B1.3
avec férule tout zircone, catégorie C nach IEC 60793-2-50 für Kategorie C

This European Standard was approved by CENELEC on 2008-12-01. CENELEC members are bound to comply with
the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to
the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the Central
Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50377-2-2:2009 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic
interconnect, passive and connectorised components.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50377-2-2 on
2008-12-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-12-01
__________
– 3 – EN 50377-2-2:2009
CONNECTOR SETS AND INTERCONNECT COMPONENTS TO BE USED IN OPTICAL FIBRE
COMMUNICATION SYSTEMS – PRODUCT SPECIFICATIONS
Part 2-2: FC/APC 8 terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre,
with full zirconia ferrule, category C
Description Performance
Coupling mechanism: screw Application: For use in EN category C
(controlled environment)
Configuration: plug/adaptor/plug Attenuation grades: B: ≤ 0,12 dB mean
(random mate) ≤ 0,25 dB for > 97 % of
measurements
Fibre category: EN 60793-2-50 C: ≤ 0,25 dB mean
type B1.1 and B1.3 ≤ 0,50 dB for > 97 % of
measurements
Cable type: see Table 3 Return loss grades: 1: ≥ 60 dB (mated),
(random mate) > 55 dB (unmated)
Related documents:
EN 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2)
EN 61300 series, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures (IEC 61300 series)
EN 61753-1, Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (IEC 61753-1)
EN 61754-13, Fibre optic connector interfaces – Part 13: Type FC-PC connector (IEC 61754-13)
EN 61755-1, Fibre optic connector optical interfaces – Part 1: Optical interfaces for single mode non-
dispersion shifted fibres – General and guidance (IEC 61755-1)
EN 61755-3-2, Fibre optic connector optical interfaces – Part 3-2: Optical interface, 2,5 mm and 1,25 mm
diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single mode fibres (IEC 61755-3-2, mod.)
ETSI TS 100 671, Transmission and Multiplexing (TM); Passive optical components; Optical fibre connectors
for single-mode optical fibre communication systems; Common requirements and conformance testing
Outline dimensions and maximum dimensions:
61 REF 83 REF
R30 min R30 min
Contents
1 Scope . 6
1.1 Product definition . 6
1.2 Intermateability . 6
1.3 Operating environment . 6
1.4 Reliability . 6
1.5 Quality assurance . 6
2 Normative references . 7
3 Des c r iption . 8
3.1 Plug . 8
3.2 Adaptor . 8
3.3 Materials . 9
3.4 Dimensions . 9
3.5 Colour and marking . 9
4 Variants . 9
4.1 Terminated plug . 9
4.2 Adaptor . 10
4.3 Identification of variants . 11
5 Dimensional requirements . 12
5.1 Outline dim ens ions . 12
5.1.1 Plug variants . 12
5.1.2 Adaptor variants . 13
5.2 Mating face and other limit dimensions . 15
5.2.1 Plug . 15
5.2.2 Adaptor . 16
5.2.3 Ferrule endface geometry after termination . 17
5.2.4 Control of fibre core position and axis . 21
5.2.5 Pin gauge for adaptor . 22
6 Tests. 23
6.1 Sample size . 23
6.2 Test and measurement methods . 23
6.3 Test sequence . 23
6.4 Pass/Fail criteria . 23
7 Test report . 24
8 Product qualification requirements . 24
8.1 Dimensional and marking requirements . 24
8.2 Optical performance r equir em ents . 25
8.3 Mechanical performance requirements . 27
8.4 Environmental performance requirements . 31
Annex A (informative) Reference connector details . 33
A.1 Reference plug . 33
A.2 Test details . 33
Annex B (normative) Adaptor matched reference plug details . 34
Annex C (normative) Sample size and product sourcing requirements . 35
Annex D (informative) Zirconia ferrule response surface . 36
Bibliography . 37

– 5 – EN 50377-2-2:2009
Figures
Figure 1 – Outline dimensions – Plugs . 12
Figure 2 – Outline dimensions – Adaptor . 13
Figure 3 – Outline dimensions – Adaptor – Panel cut out . 14
Figure 4 – Mating face and other limit dimensions – Plug . 15
Figure 5 – Mating face and other limit dimensions – Adaptor. 16
Figure 6 – Ferrule endface after termination . 17
Figure 8 – Ferrule end face geometry – Allowable undercut . 20
Figure 9 – Requirements for the attenuation grades for the plug fibre core connected to the ideal reference . 21
Figure 10 – Pin gauge for adaptor . 22
Figure D.1 – Radius vs. undercut and apex offset. 36

Tables
Table 1 – Ensured level of random attenuation . 6
Table 2 – Preferred colour scheme . 9
Table 3 – Plug variants . 10
Table 4 – Adaptor variants . 10
Table 5 – B grade plugs . 11
Table 6 – C grade plugs . 11
Table 7 – Adaptor variants . 11
Table 8 – Optical performance requirements . 25
Table 9 – Mechanical performance requirements . 27
Table 10 – Environmental performance requirements . 31
Table A.1 – Test details for reference connectors . 33
Table C.1 – Sample size and product sourcing requirements . 35

1 Scope
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements which a connector terminated with cylindrical zirconia 8 degree angled PC ferrule and
assembled singlemode resilient alignment sleeve FC-APC simplex connector set (plug/adaptor/plug), adaptor and
patchcord must meet in order for it to be categorised as an EN standard product.
Since different variants and grades of performance are permitted, product marking details are given in 3.5.
1.2 Intermateability
Although all products conforming to the requirements of this standard will intermate, the resulting level of random
attenuation performance will only be ensured in accordance with Table 1. The intention is that this will be true
irrespective of the manufacturing source(s) of the product.
When intermating plug variants have different attenuation grades, the resulting level of attenuation cannot be
assured to be any better than the worst attenuation grade.
The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation
performance.
Table 1 – Ensured level of random attenuation
Plug variant / Attenuation grade C B
C C C
B C B
1.3 Operating environment
The tests selected combined with the severities and durations are representative of a category C environment
described in EN 61753-1.
1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this
standard does not guarantee the reliability of the product. This should be predicted using a recognised reliability
assessment programme.
1.5 Quality assurance
Compliance with this standard does not guarantee the manufacturing consistency of the product. This should be
maintained using a recognised quality assurance programme.

– 7 – EN 50377-2-2:2009
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for class B
single-mode fibres (IEC 60793-2-50)
EN 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal) (IEC 61300-2-1)
EN 61300-2-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-2: Tests – Mating durability (IEC 61300-2-2)
EN 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-6: Tests – Tensile strength of coupling mechanism (IEC 61300-2-6)
EN 61300-2-12, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-12: Tests – Impact (IEC 61300-2-12)
EN 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-17: Tests – Cold (IEC 61300-2-17)
EN 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance
(IEC 61300-2-18)
EN 61300-2-19, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-19: Tests – Damp heat (steady state) (IEC 61300-2-19)
EN 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-22: Tests – Change of temperature (IEC 61300-2-22)
EN 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-42: Tests – Static side load for connectors (IEC 61300-2-42)
EN 61300-2-44, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-44: Tests – Flexing of the strain relief of fibre optic devices
(IEC 61300-2-44)
EN 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examination and measurements – Attenuation (IEC 61300-3-4)
EN 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss (IEC 61300-3-6)
EN 61300-3-10, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-10: Examinations and measurements – Gauge retention force
(IEC 61300-3-10)
EN 61300-3-15, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-15: Examinations and measurements – Dome eccentricity of a
convex polished ferrule endface (IEC 61300-3-15)

EN 61300-3-16, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-16: Examinations and measurements – Endface radius of spherically
polished ferrules (IEC 61300-3-16)
EN 61300-3-23, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-23: Examination and measurements – Fibre position relative to
ferrule endface (IEC 61300-3-23)
EN 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-28: Examination and measurements – Transient loss
(IEC 61300-3-28)
EN 61300-3-34, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-34: Examinations and measurements – Attenuation of random mated
connectors (IEC 61300-3-34)
EN 61300-3-42, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-42: Examinations and measurements – Attenuation of single mode
alignment sleeves and or adaptors with resilient alignment sleeves (IEC 61300-3-42)
EN 61753-1, Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (IEC 61753-1)
EN 61755-1, Fibre optic connector optical interfaces – Part 1: Optical interfaces for single mode non-
dispersion shifted fibres – General and guidance (IEC 61755-1)
ISO 8015, Technical drawings – Fundamental tolerancing principle
3 Description
The FC/APC 8 connector is a single position plug connector set of plug/adaptor/plug configuration with 8° angled
ferrules. A set of plug/adaptor/plug configuration characterised by a cylindrical, spring loaded butting ferrule of
2,5 mm typical diameter and a screw coupling mechanism. The optical alignment mechanism of the connector is
of a resilient sleeve style.
3.1 Plug
The plug features a cylindrical zirconia ceramic ferrule and a screw thread coupling mechanism. It has a single
male key that is used to limit and may be used to orientate, the relative rotation between mated connectors.
A cover (dustcap) to protect the ferrule endface when the connector is in the unmated condition shall be provided.
3.2 Adaptor
The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style can be
i. square flange – 4 hole
ii. square flange – 2 hole
iii. single “d-hole” fixing with back nut
iv. double “d-hole” fixing with back nut
Covers (dustcaps) shall be provided to protect each port of the adaptor.

– 9 – EN 50377-2-2:2009
3.3 Materials
Materials which are not specified or which are not specifically described are left to the discretion of the
manufacturer.
3.4 Dimensions
Outline dimensions and other dimensions necessary to ensure intermateability or which affect performance are
specified. All other dimensions are left to the discretion of the manufacturer. Where the mating face limit
dimensions are not in agreement with an EN Interface Standard this is clearly stated.
3.5 Colour and marking
Marking of the product shall be in the following order of precedence:
a) identification of manufacturer
b) manufacturing date code: year/week
c) manufacturers part number
d) variant identification number
The following colour scheme is preferred.
Table 2 – Preferred colour scheme
Coupling nut/adaptor Boot
- RAL 6018 green
NOTE Adapters shall be with RAL 6018 green identification mark on both ends.

4 Variants
4.1 Terminated plug
The defined fibre/cable variants are given in Table 3.

Table 3 – Plug variants
E N 5 0 3 7 7 - 2 - 2 - * *
Variant number Fibre/cable Structure Notes
Ø mm
B1 0,7 - 1,4 Buffered fibre 8 degrees
B2 2,0 ± 0,2 Reinforced cable 8 degrees
B3 2,5 ± 0,2 Reinforced cable 8 degrees
B4 2,8 ± 0,2 Reinforced cable 8 degrees
B5 3,0 ± 0,2 Reinforced cable 8 degrees
B6 3,2 ± 0,2 Reinforced cable 8 degrees
C1 0,7 - 1,4 Buffered fibre 8 degrees
C2 2,0 ± 0,2 Reinforced cable 8 degrees
C3 2,5 ± 0,2 Reinforced cable 8 degrees
C4 2,8 ± 0,2 Reinforced cable 8 degrees
C5 3,0 ± 0,2 Reinforced cable 8 degrees
C6 3,2 ± 0,2 Reinforced cable 8 degrees

4.2 Adaptor
The following variants are permitted:
Table 4 – Adaptor variants
Variant number Format Key width
min. max.
A01 Square flange 4 hole
A02 Square flange 2 hole
2,03 2,08
A03 Single “d-hole”
A04 Double “d-hole”
– 11 – EN 50377-2-2:2009
4.3 Identification of variants
Table 5 – B grade plugs
Variant number Performance grade Identification number
(Return loss)
B1 1 EN 50377-2-2-B1
B2 1 EN 50377-2-2-B2
B3 1 EN 50377-2-2-B3
B4 1 EN 50377-2-2-B4
B5 1 EN 50377-2-2-B5
B6 1 EN 50377-2-2-B6
Table 6 – C grade plugs
Variant number Performance grade Identification number
(Return loss)
C1 1 EN 50377-2-2-C1
C2 1 EN 50377-2-2-C2
C3 1 EN 50377-2-2-C3
C4 1 EN 50377-2-2-C4
C5 1 EN 50377-2-2-C5
C6 1 EN 50377-2-2-C6
Table 7 – Adaptor variants
Variant Number Performance grade Identification number
(Attenuation/Return loss)
A01 - EN 50377-2-2-A01
A02 - EN 50377-2-2-A02
A03 - EN 50377-2-2-A03
A04 - EN 50377-2-2-A04
The used return loss grades are compliant to EN 61755-1.

5 Dimensional requirements
5.1 Outline dimensions
5.1.1 Plug variants
C
A
B
Ref. Dimensions Note
min. mm max.
A - 32
B - 36
C 0,7  1,4
a) Variant No. B1/C1
C
A
B
Ref. Dimensions Note
min. mm max.
A - 54
B - 58
C  1,8  3,4
b) Variant No. B2/B3/B4/B5/B6, C2/C3/C4/C5/C6
Figure 1 – Outline dimensions – Plugs

– 13 – EN 50377-2-2:2009
5.1.2 Adaptor variants
D
A
K
B
A
C
B
Ref. Dimensions Note
min. mm max.
A 9,4  9,6
B 15,0 15,2
C 14,8 15,0
D M8 × 0,75 – 6g
K  2,03  2,08
a) Variant No. A01
D
A
K
B
A
C
B
Ref. Dimensions Note
min. mm max.
A 9,4  9,6
B 15,0 15,2
C 14,8 15,0
D M8 × 0,75 – 6g
K  2,03  2,08
b) Variant No. A02
Figure 2 – Outline dimensions – Adaptor

D
G F
K
E
H
C
J
Ref. Dimensions Note
min. mm max.
C 14,8 15,0
D M8 × 0,75 – 6g
K   2,03   2,08
E  9,1  9,4
F  8,8  9,0
G  8,5  8,7
H  8,8  9,0
J 10,9 11,1
a) Variant No. A03
D
M
L
K
E
H
C
J
Ref. Dimensions Note
mm
...